SU1645428A1 - Multiple barrel borehole - Google Patents
Multiple barrel borehole Download PDFInfo
- Publication number
- SU1645428A1 SU1645428A1 SU884637112A SU4637112A SU1645428A1 SU 1645428 A1 SU1645428 A1 SU 1645428A1 SU 884637112 A SU884637112 A SU 884637112A SU 4637112 A SU4637112 A SU 4637112A SU 1645428 A1 SU1645428 A1 SU 1645428A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- shank
- poc
- additional
- well
- window
- Prior art date
Links
Landscapes
- Earth Drilling (AREA)
Abstract
Изобретение относитс к строительству многозабойных скважин и предназначено дл добычи нефти и газа Цель изобретени - повышение качества цементировани . Конструкци многоствольной скважины включает полый отклон ющий клин (ПОК) 5, хвостовик 19, штангу 24 с опорными элементами 23 и породоразрушающим инструментом 21. Установлены ПОК 5 в основном 1, а хвостовик 19 в дополнительном 7 стволах скважины. Верхн часть хвостовика 19 расположена над ПОК 5 и выполнена с окном 20 со стороны последнего. Хвостовик 19 снабжен средством св зи с ПОК 5 в виде упоров 32, 33 В начале бур т основной ствол 1 и укрепл ют его колонной 2 Затем опускают хвостовик 19 и ПОК 5 После формировани дополнительного ствола 7 спускают в него обсадные трубы и цементируют Затем соедин ют хвостовик 19 с ПОК 5 и осуществл ют цементирование скважины Промывают основной 1 и дополнительный 7 стволы скважины. После затвердевани цемента сначала разбуривают цементный стакан в дополнительном стволе 7 скважины, а затем через окно 20 в ПОК 5 - в основном стволе 1 5 ил Ј (ЛThe invention relates to the construction of multilateral wells and is intended for the extraction of oil and gas. The purpose of the invention is to improve the quality of cementing. The construction of a multilateral well includes a hollow deflection wedge (PCD) 5, a shank 19, a rod 24 with supporting elements 23 and a rock-breaking tool 21. The PCP 5 is installed mainly 1, and the shaft 19 in an additional 7 boreholes. The upper part of the shank 19 is located above the POC 5 and is made with a window 20 on the side of the latter. The shank 19 is provided with a means of communicating with the QPS 5 in the form of stops 32, 33. At the beginning, the main shaft 1 is drilled and its column 2 is fixed. Then the shank 19 and the QC 5 are lowered. a liner 19 with a POC 5 and well cementing. Flush the main 1 and additional 7 boreholes. After the cement has hardened, the cement cup is first drilled in an additional wellbore 7 of the well, and then through the window 20 in POC 5 - in the main shaft 1 5 or Ј (L
Description
А-АAa
/7/ 7
Фиг 2Fig 2
В-ВBb
Г-ГYr
Фиг 5Fig 5
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU884637112A SU1645428A1 (en) | 1988-12-21 | 1988-12-21 | Multiple barrel borehole |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU884637112A SU1645428A1 (en) | 1988-12-21 | 1988-12-21 | Multiple barrel borehole |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1645428A1 true SU1645428A1 (en) | 1991-04-30 |
Family
ID=21422658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU884637112A SU1645428A1 (en) | 1988-12-21 | 1988-12-21 | Multiple barrel borehole |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1645428A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5564503A (en) * | 1994-08-26 | 1996-10-15 | Halliburton Company | Methods and systems for subterranean multilateral well drilling and completion |
CN110761712A (en) * | 2019-10-12 | 2020-02-07 | 中国海洋石油集团有限公司 | Deflecting drill bit for improving deflecting performance of flexible drilling tool |
-
1988
- 1988-12-21 SU SU884637112A patent/SU1645428A1/en active
Non-Patent Citations (1)
Title |
---|
Авторское свидетельство СССР № 431292, кл. Е 21 В 7/04, 1970. Авторское свидетельство СССР № 914745, кл. Е 2) В 7/04, 1980 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5564503A (en) * | 1994-08-26 | 1996-10-15 | Halliburton Company | Methods and systems for subterranean multilateral well drilling and completion |
CN110761712A (en) * | 2019-10-12 | 2020-02-07 | 中国海洋石油集团有限公司 | Deflecting drill bit for improving deflecting performance of flexible drilling tool |
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